CVE-2025-68239

In the Linux kernel, the following vulnerability has been resolved: binfmt_misc: restore write access before closing files opened by open_exec() bm_register_write() opens an executable file using open_exec(), which internally calls do_open_execat() and denies write access on the file to avoid modification while it is being executed. However, when an error occurs, bm_register_write() closes the file using filp_close() directly. This does not restore the write permission, which may cause subsequent write operations on the same file to fail. Fix this by calling exe_file_allow_write_access() before filp_close() to restore the write permission properly.

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

Published

2025-12-16

Modified

2026-10-15

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/480ac88431703f2adbb8e6b5bd73c3f3cf9f3d7f
• https://git.kernel.org/stable/c/54274ff90488b6c0f595a6518faed3cf0bc966eb
• https://git.kernel.org/stable/c/6cce7bc7fac8471c832696720d9c8f2a976d9c54
• https://git.kernel.org/stable/c/90f601b497d76f40fa66795c3ecf625b6aced9fd
• https://git.kernel.org/stable/c/e785f552ab04dbca01d31f0334f4561240b04459

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